Answer:
Average speed, S = 45 mph
Step-by-step explanation:
<u>Given the following data;</u>
Take-off time = 10 AM
Arrival time = 4 PM
Distance = 270 miles
To find the average speed of the bus;
First of all, we would determine the total time.
10 AM to 4 PM = 6 hours
Total time = 6 hours
Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.
Mathematically, speed is given by the formula;
Substituting into the formula, we have;
<em>Average speed, S = 45 mph</em>
<em />
<em>Therefore, the average speed of the bus is 45 miles per hour.</em>
soln,
2x+2 = 3x - 52 [vertically opposite angles]
or, 2 + 52 = 3x - 2x
therefore, x = 54°
Using the values they give you:
Length= 5cm
Width= 3cm
Height= 8cm
and using the formula:
length x width x height = 5 x 3 x 8 = 120 cm^3
The volume of the box is 120cm^3
What is the difference between selecting a member at random from a finite population and taking a simple random sample of size 1?
Solution: The correct option is d. There is no difference
<u>Explanation:</u>
Random sampling: In random sampling, each and every unit of the population has an equal chance of included in the sample.
Simple random sampling: In simple random sampling, also every unit of the population has an equal chance being included in the sample.
In the given situation, the selecting a member randomly from a finite population will be same as using a simple random sampling to select sample of size 1. Therefore, there is no difference between the two.
